EP2669676A3 - Electrochemical sensor apparatus and electrochemical sensing method - Google Patents

Electrochemical sensor apparatus and electrochemical sensing method Download PDF

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Publication number
EP2669676A3
EP2669676A3 EP13169191.7A EP13169191A EP2669676A3 EP 2669676 A3 EP2669676 A3 EP 2669676A3 EP 13169191 A EP13169191 A EP 13169191A EP 2669676 A3 EP2669676 A3 EP 2669676A3
Authority
EP
European Patent Office
Prior art keywords
electrochemical
measurement
sensor apparatus
sensing method
cathodic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13169191.7A
Other languages
German (de)
French (fr)
Other versions
EP2669676A2 (en
Inventor
Peter Robert Fielden
Nicholas John Goddard
Stefanie Moorcroft
Craig Stacey
Jonathan Frank Cook
Michael Laurence Riding
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Process Instruments UK Ltd
Original Assignee
Process Instruments UK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Process Instruments UK Ltd filed Critical Process Instruments UK Ltd
Publication of EP2669676A2 publication Critical patent/EP2669676A2/en
Publication of EP2669676A3 publication Critical patent/EP2669676A3/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416—Systems
    • G01N27/4166—Systems measuring a particular property of an electrolyte
    • G01N27/4168—Oxidation-reduction potential, e.g. for chlorination of water
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/28—Electrolytic cell components
    • G01N27/30—Electrodes, e.g. test electrodes; Half-cells
    • G01N27/308—Electrodes, e.g. test electrodes; Half-cells at least partially made of carbon
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • G01N33/182—Specific anions in water

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
  • Measuring Oxygen Concentration In Cells (AREA)

Abstract

An electrochemical sensor apparatus and electrochemical sensing method are described, using one or more working electrodes 11, 12 of boron doped diamond (BDD). A cathodic reduction process provides a cathodic measurement and, substantially simultaneously, an anodic oxidation process provides an anodic measurement. A sum of a content of two equilibrium species within an aqueous system is obtained using both the cathodic measurement and the anodic measurement. One example measures total free chlorine by simultaneously measuring hypochlorous acid (HOCl) and hypochlorite ion (OCI-).
EP13169191.7A 2012-05-28 2013-05-24 Electrochemical sensor apparatus and electrochemical sensing method Withdrawn EP2669676A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1209359.7A GB2502516B (en) 2012-05-28 2012-05-28 Electrochemical sensor apparatus and electrochemical sensing method

Publications (2)

Publication Number Publication Date
EP2669676A2 EP2669676A2 (en) 2013-12-04
EP2669676A3 true EP2669676A3 (en) 2015-05-27

Family

ID=46545996

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13169191.7A Withdrawn EP2669676A3 (en) 2012-05-28 2013-05-24 Electrochemical sensor apparatus and electrochemical sensing method

Country Status (3)

Country Link
US (1) US20130313128A1 (en)
EP (1) EP2669676A3 (en)
GB (1) GB2502516B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2520753B (en) * 2013-11-29 2016-06-15 Element Six Tech Ltd Electrochemical sensor apparatus and electrochemical sensing method
GB201405433D0 (en) * 2014-03-26 2014-05-07 Element Six Technologies Ltd Diamond based electrochemical sensor heads
GB2527104A (en) * 2014-06-12 2015-12-16 Acal Energy Ltd Redox probe
WO2016083263A1 (en) * 2014-11-25 2016-06-02 Element Six Technologies Limited Boron doped diamond based electrochemical sensor heads
GB2543088B (en) * 2015-10-08 2020-08-26 Schlumberger Holdings Inhibition of sensor biofouling
JP6814990B2 (en) * 2016-01-28 2021-01-20 学校法人慶應義塾 Residual chlorine measuring method and residual chlorine measuring device
GB201701529D0 (en) * 2017-01-31 2017-03-15 Element Six Tech Ltd Diamond based electrochemical sensors
JP6840368B2 (en) * 2017-06-16 2021-03-10 学校法人慶應義塾 Residual chlorine measuring method and residual chlorine measuring device
BR112020001075A2 (en) * 2017-07-19 2020-07-14 Buckman Laboratories International, Inc method to automatically control an active oxidant concentration for a monochloramine production process and system
FR3073945B1 (en) * 2017-11-21 2019-10-25 Suez Groupe METHOD FOR DETERMINING THE FREE CHLORINE CONCENTRATION IN A TOWER USING CHLORINE AS ACTIVE BASE
CN113176320B (en) * 2021-03-23 2022-06-28 中国科学院计算技术研究所 Flow velocity compensation method and system of membraneless dissolved oxygen sensor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7790006B2 (en) * 2002-05-03 2010-09-07 Rosemount Analytical Inc. Free chlorine sensor
JP2010227381A (en) * 2009-03-27 2010-10-14 Sanyo Electric Co Ltd Air disinfecting apparatus
US20120103823A1 (en) * 2010-10-08 2012-05-03 Dweik Badawi M Method for detecting individual oxidant species and halide anions in a sample using differential pulse non-stripping voltammetry

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19960275A1 (en) * 1999-12-14 2001-06-21 Gottard Waldemar Determination of chlorine dioxide, chlorite and/or chlorous acid in aqueous solution, useful for analyzing disinfectant, bleach and deodorizing solutions, involves measuring redox and pH before and after treatment or dilution
JP4734097B2 (en) * 2005-11-22 2011-07-27 学校法人慶應義塾 Residual chlorine measuring method and residual chlorine measuring device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7790006B2 (en) * 2002-05-03 2010-09-07 Rosemount Analytical Inc. Free chlorine sensor
JP2010227381A (en) * 2009-03-27 2010-10-14 Sanyo Electric Co Ltd Air disinfecting apparatus
US20120103823A1 (en) * 2010-10-08 2012-05-03 Dweik Badawi M Method for detecting individual oxidant species and halide anions in a sample using differential pulse non-stripping voltammetry

Also Published As

Publication number Publication date
GB2502516A (en) 2013-12-04
GB2502516B (en) 2014-11-26
GB201209359D0 (en) 2012-07-11
US20130313128A1 (en) 2013-11-28
EP2669676A2 (en) 2013-12-04

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